Re: polycarbonate with a weak prescription
- From: cutiepieusa@xxxxxxxxx
- Date: 14 Nov 2005 22:22:00 -0800
Yeah, I doubt poly is the problem with that weak of Rx and I HATE poly.
Wondering why you were put in poly for such a weak Rx though...
Your problem (and I'm not a doctor or optician, just an experienced
wearing) is that your lenses don't have an AR coating. Glasses without
an AR coating reflect up to 10% of light, dimming your vision, making
it hazy, and causing you to see reflections. The improvement an AR
coating adds is amazing. Get some AR lenses (and they may as well be
CR-39 if you don't have special safety needs, which, if you're
considering glass, I'm guessing you don't) and I bet you'll be happy as
long as it's a QUALITY, name-brand, vacuum chamber applied (or
precoated lens) coating.
Mark
todholt@xxxxxxxxxxx wrote:
> Hi,
>
> I have recently purchased some glasses from Shoppers Optical (their
> Maxthon brand), and have noticed that even though my vision is clear,
> they seem to make things appear slightly hazier, or dimmer.
>
> This is the first pair of glasses I have ever worn, and I have a fairly
> light prescription. <1 Sph in both eyes, but I do have a prism
> adjustment of +1.5BU and -1.5BD
>
> I have read that polycarbonate lenses have relatively poor image
> quality, and am considering going to cr39 or glass.
>
> The lady at shoppers optical said the quality of the lens shouldn't be
> an issue for a prescription as weak as mine.
>
> Will I notice a difference with cr39 or glass, or am I wasting my time?
> (keeping in mind my prescription strength)
>
> Also, are fogging issues a big problem with glass? I live in Canada,
> so below freezing temperatures aren't all that uncommon.
>
> Thanks,
>
> Todd
.
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